McIntosh PS112 - Manual (Page 15)

15
How to Operate the PS112 in Home Theater
How to Operate the PS112 in Home Theater
Level Control
Start with the LEVEL CONTROL in the center position
and perform the system level calibration on the A/V Con-
trol Center or Surround Decoder for the subwoofer level. If
the subwoofer level can not be set, adjust the PS112’s
LEVEL CONTROL to provide adequate range during cali-
bration.
Bass Enhance
Set the BASS ENHANCE Switch to VIDEO to add a low
frequency bass boost to enhance the impact of low fre-
quency sound effects.
Sub Frequency
When the PS112 is used with a discrete Sub Out from a
Home Theater Control Center, the SUB FREQUENCY
Control should be set to OUT, as the signal should contain
only low frequency information.
Hi-Pass Frequency
When the PS112 is used with a discrete Sub Out from a
Home Theater Control Center, the HI-PASS FREQUENCY
Control is not used.
Phase
The PHASE Switch sets the acoustic output phase of the
PS112 to either 0 or 180 degrees relative to its input. This
switch is to help avoid phase cancellation (characterized by
a loss of bass information) between the PS112 and any
other low frequency producing speaker in the system.
Careful listening with this circuit switched to 0 and then
listening with it switched to 180 will help you determine if
this effect will be beneficial to the system. Set the switch to
the desired bass.
Power
When the POWER SWITCH is set to the OFF position, the
PS112 can not be turned on by a Remote Power Conrol in-
put or audio input signal sensing.
Remote Power Control
The turn-on method uses a turn-on signal from a McIntosh
Control Center or Preamplifier. When a Power Control
Cable is connected between the Control Center or Pream-
plifier and the PS112, the signal-sensing circuit is disabled
and the PS112 will always be on whenever the Control
Center or Preamplifier is on. The PS112 also has a Power
Control OUTput jack for triggering additional subwoofers
or other McIntosh component(s).
The PS112 utilizes signal-sensing circuitry for its turn-
on method. In this mode, the PS112 turns on when a music
signal is detected at the Line INput(s). A time delay of
thirty minutes is incorporated in the circuit to prevent the
PS112 from turning off during a music or movie passage
where there is little low frequency activity. This turn-on
method is beneficial when running an additional Power
Control Cable is not feasible.